schroer



H. SCHROER.

SAWING MACHINE.

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No. 626,303. Patented lune 6, |899.

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(Application filed Feb. 8, 1899.)

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/MQW W3 JT pff/@bww o) i im HENRY SCI'IROER, OF NEW YORK, N. Y.

SAyVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 626,303, dated J`une 6, 1899.

Application filed February 8,1899. Serial No. 704,894. (No model.)

To all whom it may concern:

Be it known that I, HENRY SCHROER, a citizen of the United States, and a residentof `New York city,county and State of NewYork,

have invented an Improved Sawing-llIachine, of which the following is a specification.

This invention relates to a machine for sawing boards or veneers from short blocks of wood, the machine being more particularly designed for manufacturing cigar or other boxes, though it may of course be also applied to different purposes.

The machine com prises,essen tiall y, an endless movable chain that propels one or more carriages carrying the wood to be cut up past a gage and saw. The wood is thus iirst gaged to the thickness of the board desired and is then fed against the saw to be cut up.

The advantage of the machine is that it works automatically, has a continuous feed, and will produce a large output.

In the accompanying drawings, Figure l is a plan of myimproved sawing-machine; Fig. 2, avertical longitudinal section pn line 2 2,

Fig. l; Fig. 3, an inverted plan, partly in section; Fig. 4, a vertical cross-section on line 44, Fig. l; Fig. 5, a detail of the friction-roller adjustment; Fig. G, a longitudinal section of the carriage on line G G, Fig. 8; Fig. 7, an end view thereof, showing the dog c5 in section; and Fig. 8, an inverted plan of the carriage.

The letter a represents the frame of the machine, provided on its bed-plate a' with a continuous race a2, which contains the endless driving chain or belt l). This chain is at suit, able intervals provided with means for removably attaching to it any suitable number of carriages c, upon which the blocks Aof wood to be sawed may be supported and fed past the saw-blade. 'lhese means are shown to consist of headed pins D', projecting upwardly from the chain and adapted to engage corresponding slots c of the carriages c.

d is the d riving-shaft, which by belt d' transmits motion to the arbor e', carrying at one end the circular saw e, placed sidewise of the race a2. The arbor e' sits in bearings e2, which are vertically adjustable, so that the segment of the saw-blade projecting above the work-table may be set to correspond in height to the height of the block A to be cut into boards. The bearings e2 slide in the curved slots a3 of frame d and may be adjusted by means of a counter-shaft e3, Fig. 4, which by bevel-gear e4 turns a pair of screws e, passing through sleeves e0 and engaging the bearings. From the arbor e motion is transmitted by pulley c7 and belt es to the pulley f' of a transverse shaftf, adapted to actuate the chain l). VUpon the shaftfis mounted a vertical disk f2, which impinges with its rim against the lower face of a horizontal frictiondisk g, and thus rotates thesame by frictional contact. The shaft g2 of disk g carries a sprocket-wheel g', which engages the links of chain l) and drives the same, thech'ain passing at its opposite end around an idler g3, as shown.

The shaftfmay be moved longitudinally to set the disk f2 nearer to or farther away from the center of disk g,and thus change the speed of the feed-motion. This longitudinal adjustment is obtained by means of a set-screw f3, tapped in nut fL and engaging a turnbuckle f5,which also engages one end of shaft f. Thus the shaft f can be drawn in or out to a greater or less extent, as will be readily understood. The pulley f engages by pin f6 a longitudinal groove f7 of shaft f, so as to maintain a.

permanent engagement therewith. In order to start and stop the machine, the shaft fmay also be tilted so as to hold the disk f2 against or take it oft the disk g. The tilting is effected by a treadle 7i, actuating a rock-shaft 72,', which by crank-arm h2, link 7b3, and lever h4 moves a pin h5, connected to the journalbox f8 of shaft f, which is adapted to slide in the bearing fi. A pressure on the treadle L will swing the shaft f upward to cause an engagement of disk f2 with disk g, and a consequent motion of belt b. If pressure is taken off the treadle, the shaft f will drop by gravity to take the disk j"2 away from disk g, and thus the feed will stop.

tis a gage-plate,by means of which the thickness of the boards or veneers to be cut may be regulated. It is mounted longitudinally and transversely adjustable upon the machine-frame by means of set-screws z", engaging slots a4 in the bed-plate a. The gage is placed in front of the cutting edge of the saw, and by its lateral adjustment the distance be- IOO tween rails a7 of bed-plate a and adapted to be secured in positionby a setfscrew ai. Thus the presser, as Well as 'the gage, may be' set for shorter or longer Work.

The carriages c travel on wheels o2 and are adapted to support the blocksA to be out up.` Along.. one" edge. eachY carriage is provided;

stitute. a rack:` and against' whichthe blockA l isheldllongitudinallyby aspring'c, secured;

tozanzadjustable slide;y c?. The-rack, if used, iswengagedby aidoggo` which oirpassingA the springsgis forcedpalongthe rack to gradually feedxthe block A@ outward;

dogsaredispensed with, theblockjs fed; outwarde'i. e., against. they gageby direct conf t'actgwiththe `presserj; v

Thaoperation ofi-the machineis as follows: The blocks-Aimey placed upon the carriages andthetreadle h isd'epressedw impartmotionto the; endless beltb by frietion-disksf2 lf" the rack and.

g in the mannerV described. Thus the carriages willbe driven continuously along the race a2; and as they pass between the presser and gage the blocks A will be shifted side- Wise against the latter. The board will now be severed by the saw, and as the carriage 'continues itstravel and again arrives opposite the gage the blockA will be again shifted ,laterally by. means of the presser to compen- Lsate for the thickness of the board removed. In this Way board after board will be rapidly sawed off. Y If one of the .work-piecesA is used "up, the'machine is stopped and the carriage is recharged. It will thus be yseen that by my machine the boards or veneers are cut in rapid and automatic man-ner and" that the @output ofV the, machine willl be large and may ibe regulated bycoupling more orf less, caririages to the'chain.

Vha-tljclaiin is` In a-saw'ngfmachne,,theeombinationoff an endlessl mov'a-ble'ohain with ;a:,carriage; adapti" ed tol be operated,thereby,` ,means on the car;- friage thatv holdl the work, but permitI its lateral displacement, a gage, a coactin,ggpresser',` fanda circular sawsthat` attacks, thegaged work, substantially as specified.

HENRY SCH-BOER.' Witnesses:

Rv. BRIEsEN,. WILLIAM; SCHULZ.4 

